JP2013119444A - Tool for adjusting tension of moving handrail of passenger conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily handleable, inexpensive and manual tool by which workability and adjusting tension can be improved with high precision.SOLUTION: The tool 30 for adjusting tension is used for adjusting the tension of a moving handrail 12 by pressing a flexible guide 22 that is arranged at a part of a rail 14 to which the moving handrail 12 is attached at a predetermined load. The tool 30 includes: an operation shaft 40 having an attachment part 41 attached so as to be turnable to a skirt guard 21 so that one end of the operation shaft may be pushed up and the other end thereof may be pushed down; a depression part 50 one end of which is connected to the other end of the operation shaft 40 so as to be turnable and the other end of which is abutted on the flexible guide 22 to depress the flexible guide 22; a load measuring means 60 attached to the depression part 50; and a friction brake 70 for keeping the depressed position of the depression part 50.

Description

  The present invention relates to a tension adjusting device for a moving handrail of a passenger conveyor, and more particularly to a manual tension adjusting device.

  In the passenger conveyor, an endless moving handrail is movably attached to a railing provided on the balustrade and in the truss. And a flexible guide part for adjusting the tension of the moving handrail is provided in a part of the handrail rail. By adjusting the installation length of the guide part, the moving handrail becomes loose or excessive tension is applied. Can be set to an appropriate tension.

Specifically, the conventional tension adjustment of the moving handrail is performed as follows.
First, an inner deck board or the like located above the flexible guide part is removed, and a bolt for fixing the flexible guide part is loosened. Subsequently, the moving handrail is pressed with a predetermined force (for example, 20 kg) through the flexible guide portion so that the tension of the moving handrail falls within a predetermined range using a tension gauge, and the flexible guide portion is installed. Adjust the length. Then, while maintaining the pressing force or slightly loosening the pressing force, the bolt is again fastened and the flexible guide portion is fixed to adjust the tension of the moving handrail.

  In this tension adjustment method, the operator inserts a tension gauge from a small space between the balustrade panel and the step (skirt guard) and presses the moving handrail, so that it is difficult to press the moving handrail and adjusts the tension with high accuracy. In order to do so, skill was required. Moreover, the operator who presses a flexible guide part and adjusts a tension | tensile_strength and the worker who fixes a flexible guide part are needed normally, and there also existed a subject that work efficiency was bad.

  In view of such a situation, Patent Document 1 discloses a tension adjustment method in which a hydraulic cylinder is inserted through a gap between a balustrade panel and a step so that the piston rod presses the back surface of the flexible guide portion substantially vertically. Proposed.

JP 2008-239269 A

According to the technique disclosed in Patent Document 1, workability is improved and the accuracy of tension adjustment can be improved. However, a tension adjustment method using a tool that is easier to handle and inexpensive is required. .
Further, from the viewpoint of further improving the tension adjustment accuracy, it is preferable to fasten the flexible guide portion with the pressing force slightly relaxed after pressing the moving handrail with a predetermined force (for example, 20 kg). There is also a need for an instrument that can easily perform this.

A tension adjusting device for a moving handrail of a passenger conveyor according to the present invention is a passenger conveyor that adjusts the tension of a moving handrail by pressing a flexible guide portion provided at a part of a handrail rail to which the moving handrail is attached with a predetermined load. An operating shaft having an attachment portion for pivotally attaching to a passenger conveyor so that the other end portion is pushed down when one end portion is pushed up, and one end portion Is connected to the other end portion of the operation shaft so as to be rotatable, a pressing portion that presses down the flexible guide portion while the other end portion contacts the flexible guide portion, and a load measuring means attached to the pressing portion, And a holding means for holding the pressed position of the pressing portion.
According to this configuration, when the one end portion of the operation shaft is pushed up, the push-down portion is pushed down, and the moving handrail can be pressed via the flexible guide portion. The load (pressing force) applied to the moving handrail can be measured by the load measuring means, and the pressing force can be held by the holding means.

In the tension adjusting device according to the present invention, it is preferable that the holding means uses a friction brake that stops the rotation of the operation shaft at the attachment portion or the rotation at the connection portion between the operation shaft and the pressing portion.
According to the said structure, it becomes easy to finely adjust the pressing force applied to a flexible guide part. For example, it is possible to gradually decrease the pressing force by gradually releasing the force that pushes up the operating shaft while applying the friction brake weakly.

In the tension adjusting device according to the present invention, it is preferable that a brake lever for operating the friction brake is provided at one end of the operation shaft.
According to the said structure, the operativity of a friction brake improves.

Further, it is preferable that a stopper for fixing the brake lever is provided at one end of the operation shaft.
According to the said structure, the pressing force applied to a moving handrail can be hold | maintained. For example, when a load of 20 kg is applied to the moving handrail, the load of 20 kg can be held even when the hand is released from the operation shaft.

  In the tension adjusting device according to the present invention, it is preferable that the attachment portion includes a fixing portion that can be fixed by sandwiching the skirt guard from both sides in the thickness direction.

ADVANTAGE OF THE INVENTION According to this invention, while being able to improve workability | operativity, it is possible to improve the precision of tension adjustment, and it is easy to handle and can provide an inexpensive manual type instrument.
Further, according to the instrument of the present invention, the operation of fastening the flexible guide portion with the pressing force slightly relaxed after pressing the moving handrail with a predetermined force, particularly by the configuration using the friction brake as the holding means. Can be easily performed.

It is a schematic diagram which shows a general escalator. It is the A section enlarged view of Drawing 1, and is a figure which omitted a handrail. It is a figure which shows the tension adjustment instrument of the moving handrail of the escalator which is an example of embodiment of this invention, Comprising: It is a figure which shows a mode that the instrument was attached to the skirt guard. It is the figure which looked at the B section of Drawing 3 from the direction of an arrow. It is a figure which shows a mode that a moving handrail is pushed down using the tension | tensile_strength adjustment tool of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In the embodiment, the escalator 10 is illustrated as a passenger conveyor, but the application of the present invention is not limited thereto. The present invention can be applied to, for example, other forms of escalators and so-called moving walkways.

1 and 2 show an escalator 10 that uses a tension adjusting device 30 (hereinafter, referred to as a tension adjusting device 30) for a moving handrail of an escalator, which is an example of an embodiment of the present invention.
The escalator 10 is a lifting device in which a plurality of steps 11 circulate between an upper floor and a lower floor. On both sides of step 11, there are provided a handrail 12 that moves in conjunction with step 11, and a balustrade 13 to which the handrail 12 is movably attached.

  The step 11 is attached to an endless step chain 15. The step chain 15 is stretched over the sprockets 16 and 17, and the sprocket 16 is rotated by a driving device (not shown). As a result, the step chain 15 moves between the sprockets 16, 17, and a plurality of steps 11 connected by the step chain 15 circulate between the upper floor entrance 18 and the lower floor entrance 19. To do.

  The movable handrail 12 is fitted to a handrail rail 14 provided on the balustrade 13 so as to be movable. The moving handrail 12 is moved by a handrail driving device (not shown). Since the handrail driving unit is driven by a driving device that moves step 11, step 11 and moving handrail 12 are interlocked.

  The balustrade 13 is a side wall provided on both sides of the step 11. The balustrade 13 includes, for example, a balustrade frame (not shown) and a balustrade panel 20 made of glass, plastic, or stainless steel. Below the balustrade panel 20, an inner deck board (not shown), a skirt guard 21 (see FIGS. 3 and 5 described later), and the like are installed. For example, the inner deck board is provided by closing a gap between the balustrade panel 20 and the skirt guard 21.

  The handrail rail 14 is installed on the balustrade 13 from the entrance 18 to the entrance 19. Furthermore, the handrail rail 14 is also provided in the truss P that is not visible to the user of the escalator 10. The handrail rail 14 is fixed to the truss frame 26, for example. In addition, as shown in FIG. 2 (the enlarged view of the portion A in FIG. 1 and without the moving handrail 12), a part of the handrail rail 14 located in the truss P is divided. And the flexible guide part 22 for adjusting the tension | tensile_strength of the moving handrail 12 is provided in the said division | segmentation part.

  The flexible guide portion 22 is, for example, a long thin plate made of plastic, and a fixed fitting 23 is provided at one end and a movable fitting 24 is provided at the other end. And the flexible guide part 22 is attached by the fixed metal fitting 23, the movable metal fitting 24, and the volt | bolt 25 so that the divided handrail rail 14 may be connected. The flexible guide portion 22 is attached, for example, in a state curved in a convex shape downward as illustrated.

  The movable metal fitting 24 is formed with a long and narrow bolt hole whose longitudinal direction is the longitudinal direction of the flexible guide portion 22. Thereby, the fixed position of the movable metal fitting 24 can be slid in the longitudinal direction of the flexible guide part 22, and the installation length of the flexible guide part 22 can be changed. Then, by changing the installation length of the flexible guide portion 22, the degree of bending of the flexible guide portion 22 changes, and the tension of the moving handrail 12 is adjusted.

The tension adjusting device 30 will be described in detail with reference to FIGS.
FIG. 3 shows a state in which the tension adjusting device 30 is attached to the skirt guard 21, and FIG. 4 is a view of the portion B of FIG. 3 as viewed from the direction of the arrow, and a part thereof is a sectional view. FIG. 5 shows how the moving handrail 12 is pressed by the tension adjusting device 30.

  The tension adjusting instrument 30 is an instrument that adjusts the tension of the moving handrail 12 by pressing the moving handrail 12 with a predetermined load via the flexible guide portion 22. The predetermined load is, for example, 20 kg. In the following, after pressing the moving handrail 12 with 20 kg, the flexible guide portion 22 is fastened in a state where the pressing force is slightly loosened and the installation length of the flexible guide portion 22 is returned by a predetermined length (for example, 2 cm). The tension adjustment method to illustrate is illustrated.

  The tension adjusting device 30 receives the force from the operation shaft 40 and the operation shaft 40 that is gripped and operated by the operator, and performs the flexible guide portion 22 in order to perform the tension adjustment easily and with high accuracy. A pressing part 50 to be pressed down, a load measuring means 60 attached to the pressing part 50, and a friction brake 70 as a holding means for holding the pressing position of the pressing part 50 are provided.

  The operation shaft 40 has an elongated bar shape, and is rotatably attached to the escalator 10 so that the other end is pushed down when the one end is pushed up. The operation shaft 40 has an attachment portion 41 that enables such attachment. The attachment portion 41 is preferably provided at the center in the longitudinal direction of the operation shaft 40. A grip 42 for facilitating gripping is provided at one end portion of the operation shaft 40, and a connection portion 43 with the pressing portion 50 is provided at the other end portion of the operation shaft 40. For example, a substantially cylindrical rubber member fitted to the operation shaft 40 can be applied to the grip 42. In the connection portion 43, for example, through holes are formed in the operation shaft 40 and the pressing portion 50. A shaft 44 such as a pin is inserted into the through hole, and the operation shaft 40 and the pressing portion 50 are connected to each other so as to be rotatable.

  The attachment portion 41 attaches the operation shaft 40 to the skirt guard 21 so as to be rotatable. The attachment portion 41 includes a fixing portion 45 that can be fixed by sandwiching the skirt guard 21 from both sides in the thickness direction. An insertion hole for a bolt 46 is formed in the fixing portion 45, and the attachment portion 41 is fastened to the skirt guard 21 using the fixing portion 45 and the bolt 46. The operation shaft 40 has such a length that the connection portion 43 is positioned vertically above the flexible guide portion 22 in a state where the fixing portion 45 is fastened to the skirt guard 21. The skirt guard 21 is usually formed with a bolt hole for attaching an inner deck board or the like, and the bolt hole can be used for fastening with the fixing portion 45.

  The attachment portion 41 further includes a shaft support portion 47 disposed on the upper portion of the fixed portion 45. The shaft support portions 47 are provided on both sides of the operation shaft 40 so as to sandwich the operation shaft 40. Each shaft support 47 is formed with a bearing hole 48. A shaft 49 fixed to the operation shaft 40 is inserted into the bearing hole 48. The bearing hole 48 may be provided with a bearing if necessary. With this structure, it is possible to attach the rotatable operation shaft 40 so that the other end is pushed down when the one end is pushed up.

  Further, the mounting portion 41 is provided with a disk 71 and a brake shoe 72 that are components of the friction brake 70. A shaft 49 is vertically fixed at the center of the surface of the disk 71, and the disk 71 rotates with the rotation of the operation shaft 40. The brake shoe 72 has a function of stopping the rotation of the disk 71. The friction brake 70 will be further described later.

  Similar to the operation shaft 40, the pressing unit 50 has a long and narrow bar shape. One end portion of the pressing portion 50 is provided with a connection portion 43 with the operation shaft 40, and the other end portion is a contact portion with the flexible guide portion 22. The pressing unit 50 receives a load generated by pushing up the operation shaft 40 via the connection unit 43. Then, the load becomes a pressing force that pushes down the flexible guide portion 22 along the axial direction (substantially vertical direction) of the pressing portion 50 and presses the movable handrail 12 through the flexible guide portion 22.

  The load measuring means 60 has a function of measuring a pressing force applied to the moving handrail 12, that is, a load generated by pushing up the operation shaft 40. The load measuring unit 60 includes, for example, a compression spring 61 provided at an intermediate portion of the pressing unit 50 and a scale 62 provided at a position where the amount of deformation of the compression spring 61 can be measured. The compression spring 61 is disposed such that its axial direction is along the axial direction of the pressing portion 50, and is compressed by applying a load from the operation shaft 40 to the pressing portion 50. Since the relationship of the load to the deformation amount of the compression spring 61 is known in advance, the deformation amount of the compression spring 61 can be measured using the scale 62 and the pressing force applied to the moving handrail 12 can be measured.

  The friction brake 70 has a function of holding the pressed position of the pressing unit 50, that is, holding the pressing force applied to the moving handrail 12. The friction brake 70 is provided on the operation shaft 40 and holds the pressing force by stopping the rotation of the operation shaft 40 in the mounting portion 41. The friction brake 70 may be provided so as to stop the rotation at the connection portion 43 between the operation shaft 40 and the pressing portion 50.

  The friction brake 70 includes the disk 71, the brake shoe 72, a brake lever 73 that operates the brake shoe 72, and a wire 74 that connects the brake shoe 72 and the brake lever 73. In the friction brake 70, by operating the brake shoe 72, the brake shoe 72 is pressed against the disc 71 to stop the rotation of the disc 71. Thereby, the rotation of the operation shaft 40 connected to the disk 71 can be stopped, and the inclination of the operation shaft 40 is maintained. According to the friction brake 70, it is easy to finely adjust the operation amount of the brake lever 73, and thus, the inclination of the operation shaft 40, that is, the pressing force can be finely adjusted.

  The brake lever 73 is provided at one end of the operation shaft 40. Thereby, favorable operability of the brake lever 73 can be realized, and fine adjustment of the pressing force applied to the moving handrail 12 is further facilitated. Therefore, according to the tension adjusting device 30, after pressing the moving handrail 12 with 20 kg, it is possible to easily perform an operation of slightly releasing the pressing force and returning the installation length of the flexible guide portion 22 to a predetermined length.

  A stopper 75 that fixes the brake lever 73 is provided at one end of the operation shaft 40. The stopper 75 can be hooked on the brake lever 73 to fix the brake lever 73. Thereby, even if the operator removes his / her hand from the grip 42, the pressing force applied to the moving handrail 12 can be maintained. In addition, it is easy to fasten the bolt 25 of the movable bracket 24 after the pressing force is slightly loosened and the installation length of the flexible guide portion 22 is returned to a predetermined length.

  Here, a method for adjusting the tension of the moving handrail 12 using the tension adjusting device 30 will be illustrated.

  When adjusting the tension of the moving handrail 12, first, the inner deck board located above the flexible guide portion 22 is removed, and the pressing portion 50 is placed in the truss P from the gap between the balustrade panel 20 and the skirt guard 21. And the other end of the pressing part 50 is placed on the flexible guide part 22. The fixing portion 45 of the attachment portion 41 is fixed to the upper end of the skirt guard 21 while maintaining the state where the pressing portion 50 is in contact with the flexible guide portion 22. Thus, the setting of the tension adjusting device 30 is completed.

  Subsequently, the bolt 25 on the movable metal fitting 24 side is loosened to bring the flexible guide portion 22 into close contact with the moving handrail 12. Then, by gripping the grip 42 and lifting one end of the operation shaft 40, the movable handrail 12 is pressed through the flexible guide portion 22. When one end portion of the operation shaft 40 is lifted upward, the operation shaft 40 rotates with the shaft 49 as a fulcrum, and the other end portion is pushed downward. Since the connecting portion 43 with the pressing portion 50 is provided at the other end portion of the operating shaft 40, the load generated by lifting the operating shaft 40 is a force that pushes down the pressing portion 50 via the connecting portion 43. Become. Accordingly, the flexible guide portion 22 that contacts the other end portion of the pressing portion 50 is pushed down, and the movable handrail 12 is pressed through the flexible guide portion 22. At this time, since the compression spring 61 is deformed according to the pressing force (the force that lifts the operation shaft 40), the pressing force can be measured using the scale 62.

  Then, the operator adjusts the degree of lifting the operation shaft 40 while looking at the scale 62 and sets the pressing force to 20 kg. After setting the pressing force to 20 kg, the brake lever 73 was operated to brake the rotation of the operating shaft 40, and the pressing force was slightly relaxed to return the construction length of the flexible guide portion 22 to a predetermined length. State. In this state, the stopper 75 is hooked on the brake lever 73 and fixed so that the brake lever 73 does not return, and the rotation of the operation shaft 40 is stopped to hold the pressing force. That is, the stopper 75 can hold the pressing force applied to the moving handrail 12 even when the hand is released from the grip 42. Finally, the bolt 25 of the movable bracket 24 is fastened again, and the tension adjustment operation of the movable handrail 12 is completed.

  As described above, the tension adjusting device 30 is an easy-to-handle and inexpensive manual-type device, but can improve the workability of the tension adjustment and improve the accuracy of the tension adjustment. Further, according to the tension adjusting device 30, after the movable handrail 12 is pressed with a predetermined force, an operation of fastening the flexible guide portion 22 can be easily performed with the pressing force slightly relaxed. Furthermore, if the tension adjusting device 30 is used, a series of tension adjusting operations can be performed by one person, and the working efficiency can be improved.

  10 escalators, 11 steps, 12 moving handrails, 13 railings, 14 handrail rails, 15 step chains, 16, 17 sprockets, 18, 19 boarding gates, 20 balustrade panels, 21 skirt guards, 22 flexible guides, 23 fixing brackets , 24 Movable bracket, 25, 46 bolt, 26 truss frame, 30 tension adjusting device, 40 operation shaft, 41 mounting portion, 42 grip, 43 connection portion, 44, 49 shaft, 45 fixed portion, 47 shaft support portion, 48 bearing hole , 50 pressing part, 60 load measuring means, 61 compression spring, 62 scale, 70 friction brake, 71 disc, 72 brake shoe, 73 brake lever, 74 wire, 75 stopper.

Claims (5)

A tension adjusting device for a moving handrail of a passenger conveyor that adjusts the tension of the moving handrail by pressing a flexible guide portion provided at a part of the handrail rail to which the moving handrail is attached, with a predetermined load,
An operating shaft having an attachment portion for pivotally attaching to the passenger conveyor so that the other end portion is pushed down when the one end portion is pushed up;
One end portion is rotatably connected to the other end portion of the operation shaft, and the other end portion abuts on the flexible guide portion and pushes down the flexible guide portion;
A load measuring means attached to the pressing part;
Holding means for holding the pressed position of the pressing portion;
A tension adjusting device for a moving handrail of a passenger conveyor. The tension adjusting device according to claim 1,
The holding means is a tension adjusting device for a handrail of a passenger conveyor that is a friction brake that stops the rotation of the operation shaft at the attachment portion or the rotation at the connection portion between the operation shaft and the pressing portion. The tension adjusting device according to claim 2,
A tension adjusting device for a moving handrail of a passenger conveyor provided with a brake lever for operating a friction brake at one end of the operation shaft. The tension adjusting device according to claim 3,
A tension adjusting device for a moving handrail of a passenger conveyor provided with a stopper for fixing a brake lever at one end of the operation shaft. In the tension adjustment instrument according to any one of claims 1 to 4,
The attaching part is a tension adjusting device for the moving handrail of the passenger conveyor including a fixing part that can be fixed by sandwiching the skirt guard from both sides in the thickness direction.

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